A zombie apocalypse wipes out almost the entire human species before the zombie threat is eliminated. It appears that only a group of 100 people who were at a family reunion on an uninhabited island survived. They returned to the mainland completely unaware of what had happened to everyone. Answer the following questions regarding the few survivors that now begin to rebuild the human population.

Certain traits will have been lost from the gene pool forever. Some may be obvious, like people with red hair and double jointed thumbs. Others will be less obvious, like the ability to process cholesterol or being allergic to peanuts.

a.) Which of the following best describes the mechanism of microevolution that has altered the human gene pool? Explain.

b.) Despite an abundance of habitat, why will it be difficult for the human species to recover in numbers?

c.) A straggler with green eyes stumbles into the last remaining human outpost. The green eye trait did not exist in the outpost before her arrival, but it does now. What is the name of this mechanism of evolution? Explain.

Answers

Answer 1

Answer and Explanation:

A. Hello. You did not enter answer options. However, we can state that mutation, natural selection and genetic drift will be the microevolution mechanisms that will affect the gene pool of these humans. This is because the new environment and the small number of living beings, will make this population completely susceptible to all these evolutionary factors, which will affect, in different ways, the gene frequencies in a population.

B. As the amount of living beings and human beings has become very small, the world will have a low genetic diversity. This will make it difficult for these humans to adapt to the new environment and will make them more susceptible to possible diseases that will arise in this new environment. This will make these humans more fragile and make it harder for them to multiply.

C. The evolution mechanism is the Gene Flow. Gene Flow refers to the exchange of genetic information between individuals in a population, through the donation of gametes that occur in reproductive processes. In this case, we can consider that the individual with green eyes, upon arriving in the community with individuals without green eyes, began to reproduce descendants, who, upon receiving the gametes responsible for green eyes, began to populate this community with this characteristic.


Related Questions

In terms of base nucleotides, explain the only difference between the DNA message for normal hemoglobin and the DNA message for sickle-cell hemoglobin.

Answers

Answer:

In the 1950s, Vernon Ingram demonstrated that the only structural difference between normal adult hemoglobin and sickle-cell hemoglobin is the replacement of glutamic acid with valine in the β-globin amino acid chain (Ingram, 1957; 1959).

its may help you

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When Dr. Philip tierno conducted his experiment on the pillows , he wanted to know the connection between pillows and the allergy-causing germs. He was trying to answer the question, Do these pillows contain germs that contribute to the family allergies?

Answers

Answer:

Yes. That was the question he was trying to answer.

Explanation:

To conduct the experiment investigating the connection between pillows and disease-causing gems, Dr. Philip needs to ask himself whether the pillows that will be used in the research contain germs that contribute to allergies in a family. This question allows Dr. Philip to have the basis to start his research and come to a conclusion about the pillows used in the research. Furthermore, the research points directly to the main point of the story.

Answer:When Dr. Philip Tierno conducted his experiment on the pillows, he wanted to know the connection between pillows and the allergy-causing germs. He was trying to answer the question, Do these pillows contain germs that contribute to the family’s allergies?

Explanation:Edmentum

In what ways is a eukaryotic cell similar to a city?

Answers

Answer:  In many ways, the eukaryotic cell is kind of like a city. I will tell you what each of the organelles in a cell does. Your job will be to try to match each of the cell parts to the parts of a city and explain why they are similar. a) Golgi Apparatus: packages up proteins and labels them for distribution to other parts of the cell.

Each one, like the organs inside your body, fulfills a particular function that is required for the cell to stay alive. Consider the cells to be a miniature city. Because they all do similar jobs, the organelles could represent companies, places, or parts of the city.

What is a cell?

Cells are the fundamental building blocks of all life. Gazillions of cells make up the human body.

They support the body's structure, absorb nutrients from food, convert those nutrients into energy, and perform specialized functions.

Each one, like the organs in your body, performs a specific function that is required for the cell to survive. Think of the cells as a miniature city.

Because cell city has jobs that a plant cell does not, it represents an animal cell. In cell city, we believe that a waste disposal plant performs the same function as lysosomes, an organelle found only in animal cells.

Thus, this way, a eukaryotic cell similar to a city.

For more details regarding a cell, visit:

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14). Clonal selection and differentiation of B cells activated by antigen exposure leads to the production of ________. A) large quantities of the antigen initially recognized B) vast numbers of B cells with random antigen-recognition receptors C) long-lived erythrocytes that can later secrete antibodies for the antigen D) short-lived plasma cells that secrete antibodies for the antigen

Answers

Answer:

The correct answer is D) short-lived plasma cells that secrete antibodies for the antigen

Explanation:

Each B lymphocyte has an antigen receptor (BCR: B cell receptor), a surface immunoglobulin (IgM or IgD), that binds to specific domains of the antigen called antigenic determinants or epitopes. Only B lymphocytes with a high antibody affinity for the antigen, and which are capable of processing and presenting it, will be positively selected. In this contact between the two cells, an exchange of chemical signals takes place that leads to the activation, clonal proliferation and differentiation of B cells into two sister subclones: one of antibody-secreting plasma cells, and the other of memory primed B cells. Therefore, only these last positively selected B lymphocytes will survive, proliferate and differentiate into plasma cells, synthesizing and secreting antibodies of a single isotypic class, with a unique specificity and high affinity, improving the ability to adhere to the antigen and, thus , neutralize and destroy pathogens.

Select the best description of amino acid metabolism: Group of answer choices Amino acid metabolism does not occur. Aerobic metabolism of amino acid requires deamination. Metabolism of amino acids is the primary source of energy during long-duration exercise. Metabolism of amino acids is the primary source of energy during short bursts of activity. Can reduce urea production from ammonia in the liver.

Answers

Answer:

Aerobic metabolism of amino acid requires deamination

Explanation:

Living system can be defined as the internal systems of organisms and how materials circulate within organisms.

Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.

Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.

Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, digestion, metabolism, etc.

Metabolism can be defined as a set of chemical processes carried out by a living organism such as humans, plants and animals, in order to sustain life.

Aerobic (oxygen-using) metabolism can be defined as a biological process that typically involves the extraction of energy from any carbohydrate source such as amino acids, fatty acids, etc.

Basically, an aerobic metabolism of amino acid is a process that requires deamination.

Generally, proteins comprises of amino acids and it is responsible for maintaining the proper functioning of the body system.

Transamination can be defined as a biochemical process which typically involves the removal of amino groups from amino acids and transferring them to a ketoacid (amino acid without an amine group), so as to form new amino acids.

Basically, transamination is a reversible oxidation-reduction reaction that is responsible for the deamination of amino acids.

Which organism obtains its energy exclusively from dead or decaying matter?

Answers

Answer:

Bacteria obtains energy from dead bodies of animals and plants.

The decomposers are the organism, which feed on the dead and decaying matter.

what are the cells that pass from parents to their children

Answers

Answer:

Genes are the blueprint for our bodies. If a gene contains a change, it disrupts the gene message. Changes in genes can cause a wide range of conditions. Sometimes a changed gene is inherited, which means it is passed on from parent to child. Changes in genes can also occur spontaneously.

If Darwin knew of Mendel's work, how might it have influenced his theory of evolution? Do you think this would have affected how well Darwin's work was accepted?

Answers

Answer:

See explanation

Explanation:

According to Darwin, the determinant of the ability of species to thrive in their environment is their ability to develop favourable characteristics which enable them to survive in their environment. This ability to develop favourable characteristics is called natural selection.

These favourable characteristics are passed on from parents to offsprings and are responsible for the perpetuation of organisms having these favourable characteristics in comparison to other members of the same species.

In relation to Mendel's theory, these favourable characteristics could be regarded as Mendel's factors (currently identified as genes). These factors are units of inheritance passed on from parents to offsprings.

If Darwin had an idea of Mendel's work when he propounded his evolution theory, he could have modified his idea of favourable characteristics to imply genes. This would have made his idea more empirical than speculative and led to a faster world wide acceptance of his ideas.

Cell specialization is important during the growth and development of
a multicellular organism. This process is most directly regulated by

Answers

Answer:

Protein

Explanation:

A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms.

Cell specialization is also referred to as cell differentiation and it can be defined as a biological process through which generic cells transform into specific cell types, so as to enable them perform certain functions within the body of a living organism.

Simply stated, it's the special function or job in the body of a living organism that are associated with cells.

Generally, cell specialization plays a significant role in the development of embryos.

Some living organisms are unicellular while others are multicellular in nature.

A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.

Cell specialization is fundamental and key for the growth and development of a multicellular organism.

Furthermore, cell specialization as a process is most directly regulated by protein; one super regulating protein encourages cell differentiation while the other tries to stop or prevent the process. These proteins are referred to as master regulating proteins or Helix-Loop-Helix proteins.

What does it mean for a human to express their genes?

Answers

Answer:

Gene expression is the process by which the instructions in our DNA are converted into a functional product, such as a protein. ... Gene expression is a tightly regulated process that allows a cell to respond to its changing environment.

Nitrogen is the most common element in the air. Why do bacteria play a role in the nitrogen cycle?

Answers

Explanation:

Bacteria play a role in the nitrogen cycle because:

The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.  

Answer:

sorry I didn't know hahaha

Multiple species of lizard feed on insects in the Caribbean islands. One
species of lizard lives on the ground, while another lives on tree branches.
Which statement is true of these two lizard species?
A. They have adapted to different niches due to competition.
B. They have adapted to different niches due to predation.
C. They have a mutualistic relationship with the insect species.
O D. They have the same niche: the Caribbean islands.

Answers

DI hope this really helped you

The two species of lizards have adapted to different niches to avoid competition. Therefore, option"A" is correct.

What is an ecological niche?

An ecological niche is the particular habitat of a  particular species in an ecosystem. The term was coined by Joseph Grinnell in  1917. The selection of a niche depends on the environmental condition, to avoid competition and availability of the food. The different types of niches are spatial niches, tropical niches, and hypervolume niches.

Habitat is defined as the coexistence of abiotic and biotic things. Examples of habitats are the ocean and forests. A niche whereas is an inclusive space occupied by species in a habitat.

The ecological niche is occupied by a species of organism to avoid competition.

Learn more about an ecological niche, here:

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Why are dogs color blind?

Answers

Answer:

It is caused by abnormalities in color-detecting molecules, known as cones, in the retina.

I hope this will help you

7. You and your lab partner are doing an experiment in the physiology lab. Each of you has an isolated muscle cell and you are supposed to stimulate it with an electrode as soon as its absolute refractory period ends. Your partner has a cardiac muscle cell and you have a skeletal muscle cell. Which one of you will use your electrode more times in one minute

Answers

Answer: I will use the electrode on the skeletal muscle cell more times in a minute than my partner will.

Explanation:

Based on the information given, an electromyograph tracing can be used on order to know when to use the electrode for the scenario explained.

An electromyograph is simply a machine that is used for the detection and the recording of the electrical potential that's been generated by muscle cells when such muscle cells are activated.

Due to the fact that a skeletal muscle cell while my partner has a cardiac muscle cell, I'll have to use the electrode on the skeletal muscle cell more times in a minute than my partner will.

Which of the following molecules contains three phosphate groups?
A. AMP
B. ADP
C. APP
D. ATP

Answers

Answer:

D) ATP contains three phosphate groups.

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Which relates the wavelength and frequency of a wave?

The frequency is the number of wavelengths that pass a fixed point in a second.

A wavelength is the distance on a wave between one frequency and the next.

The time it takes for one wavelength to pass a fixed point is the frequency.

The speed at which a wavelength travels is the frequency of the wave.

Answers

Answer:

The correct answer is - The frequency is the number of wavelengths that pass a fixed point in a second.

Explanation:

The wavelength of a wave is the distance between one point on a wave and the nearest point or one crest to another crest of a wave.  The frequency of the wave is the number of wavelengths that pass a fixed point in a second.  A period is the amount of time one wavelength requires to pass a point.

Frequency = 1/wavelength, which means if one increases other decreases.

Thus, the correct answer is - The frequency is the number of wavelengths that pass a fixed point in a second.

Answer: A

Explanation:

what happens to the space inside the bell jar when the stretchy rubber is pulled down?

Answers

Answer:

The cavity inside the bell jar is airtight. As the diaphragm is pulled down, the volume of the cavity increases

Answer:

The cavity inside the bell jar is airtight. As the diaphragm is pulled down, the volume of the cavity increases.

This causes an increase in pressure within the bell jar, the air rushes out of the balloons causing them to deflate.

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Skin Contact: In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.

Answers

Answer:

yes sir or maam because all types of skin can have germs

Explanation:

Answer: yes

Explanation: because all types of skin can have germs

Which compound is known as end product of purine nucleotide metabolism? * Uric acid Carbonic acid Uronic acid Citric acid

Answers

Uric acid is the answer mate

A woman discovers that her family has a history of a rare, X-linked genetic disorder that causes symptoms late in life. Her mother and father didn’t have the disease, but all three of her brothers do. What is the probability that the woman will have the disease as well?
A. 100%
B. 75%
C. 50%
D. 25%
E. 0%

Answers

50%

explanation: the mother has two x’s and the father has an xy so the sons got an affected x from the mother, and a y from the father. the woman could get either x from the mother (affected or not) and the x from the father (unaffected since the father didn’t have the disease)

Biology B (CR) (ACC. Ed)(Dixon) / Principles of Evolution
3. How many total, non-unique alleles are there for each gene in a population of 250 humans?
A 125
B 1000
C 500
D 250

Answers

Answer:

C. 500

Explanation:

Each human has 2 alleles, which you do 250*2, getting 500

An amino acid analyzer is an instrument used to determine a. the sequence of amino acids in a polypeptide chain b. the presence of modified amino acids in a protein c. the identity of N-terminal and C-terminal amino acids in a protein d. the identities and relative amounts of amino acids in a protein

Answers

Answer:

d. the identities and relative amounts of amino acids in a protein

Explanation:

An amino acid analyzer is an automated machine that is used to determine the identities and quantities of amino acids in a given protein, peptide, and cellular samples. It makes use of the ion-exchange chromatography principle to determine the presence of amino acids. When the chromatogram is obtained, the relative amounts are then determined by the analyzer.

Since proteins are made of sequences of amino acids, the identities of proteins can also be obtained through this method. Ninhydrin, in the chromatographic column, reacts with the present amino acids under an ultra violet detector and is then observed at a wavelength of about 440 - 570nm.

“Red rust is one of the destructive diseases in tea plants which results adverse effect on tea yield. It is caused by a type of algae.” Which discipline of Biology is related to explain the above statement?
a) Mycology. b) Agronomy. c) Pathology. d) Phycology​

Answers

Answer:

The correct answer is - c) Pathology.

Explanation:

Mycology is the branch of biology in which students study fungi and their characteristics including their biochemistry, taxonomy, and genetics.

Agronomy is the other branch of biology that deals with agriculture and its practices and work to improve the crops.

Phycology is the study of algae and their characteristics including their biochemistry, taxonomy, and genetics.

The disease and its causes are studied under the pathology branch o  biology therefore, red rust would be studying in this discipline.

QUE S T
b)
1
A supermarket chain advertises that its plastic carrier-
bags are 'environmentally friendly'. These bags are
made from polythene and contain added starch. A
student decided to find out if the claim is true. In the
investigation the student buried a piece of plastic from
the bag in a pot of soil and left it for one month. When
the plastic was dug up there were many small holes in
it.
The drawings show the plastic, as seen through a
microscope,
before and after being buried.
Starch
Hole
3
Plastic buried for 1 month
Plastic before being
buried
a) Explain, as fully as you can, the process that caused
the holes to appear in the plastic.​

Answers

Answer:

The holes were formed from either.., bugs could have ate the starch and the polyethylene was not a deterrent?

It may be biodegradable because it is edible to bugs? I'm not  sure that makes it completely biodegradable though.

https://www.livescience.com/58810-caterpillar-biodegrades-plastic-bags.html

copy and paste this link. Explains alot?

Suppose D were dominant and d were recessive, and you could label the D allele in the P generation with a radioactive substance that could be inherited over several generations. You create hybrids by mating your radioactive DD individuals to dd individuals. Finally, you cross two F1 individuals (with the Dd genotype). In 1,000 offspring, how many would you predict would be radioactive?

Answers

Answer:

750 offspring

Explanation:

The correct answer would be 750 offspring.

The D allele has been labeled with radioactive substance.

If you cross Dd and Dd:

         Dd    x    Dd

     DD   Dd   Dd   dd

3/4 of the resulting offspring would have, at least, the D allele.

Hence, out of 1000 offspring,

     3/4 x 1000 = 750

750 would possess the radioactive label.

PLZZ HELP

Phosphorus is mainly found in the environment stored in
A. the atmosphere
OB. legumes
C. mineral deposits
D. denitrifying bacteria

Answers

Answers: I think it’s a or c

Explanation:

Explain the adaptations for root hair cell

Answers

Answer:

they have thin membranes to allow diffusion of substance for short distance

they are numerous to increase the surface area of absorption

hope this helps

1. Identify Study the picture of the cockroach to the
right and identify some characteristics that
you could use to describe a cockroach

Answers

Answer:

you should use the head and the body to describe a cockroach

Explanation:

Based on how they each acted to the trials,witch substance (s)would most likely be metallic

Answers

Answer:

The answer should be C....and them unit test sure do suck no cap :,)

Explanation:

Which of the following does not result in a cell with a new genetic
composition?
A.Conjugation
B.Transduction
C.Transformation
D.O Binary fission

Answers

Answer: D

Explanation:

Answer:

d. binary fission

Explanation:

a. direct contact transfer..so no

b. transfer by a virus...so no

c. transferred between microbial cells ... so no

d. asexual reproduction by a separation of the body into two new bodies ...so yes!

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The term New South describes the work of Southerners in changing their:A. culture.B. economyC. politics.D. all of the above PLEASE HELP ME I DONT UNDERSTAND A signal word is a figure of speech True or False?honest and helpful answers get branliest I WILL AWARD BRAINLIEST PLEASE HELP!!!All the students in an English class complete a 25-point extra-credit assignment to raise their test scores. The new test score is 25 points more than the original score. Let x = original score Let y = new score Which equation represents this situation? A. y = 25x B. y = x 25 C. y = x 25 D. y = x + 25 .Reliable scholarly source is always stressed in academic writing because The CEO of CLEO, Inc., in all her communications to employees consistently refers to her dream of CLEO becoming the company of choice for employee assistance programs. She keeps this theme uppermost and it is reflected in the firm's motto, the title of its Web newsletter, and even on the company T-shirts and mugs. This is an example of the firm's: Group of answer choices strategy. envisioned future. organizational culture. core ideology. Why was it important to the pilgrims to find fields of corn? Ade thinks of a number He doubles it and then subtract 5 The result cannot be less than 100 find the range of values of x Find the value of m. A. 7B. 2C. 42D. 14 Why did some people in China consider Mao Zedong a despot? What type of address do computers use to find something on a network? g Todd Foley is applying for a $210,000 mortgage. He can select either a $1,470 monthly payment with no points or a $1,323 payment with 4 points. How many months will it take Todd to cover the cost of the discount points if he takes the lower monthly payment In which areas of culture did Syed Alaol work?this is the pharagraph but i cant find the answer;Summary: A seventeenth-century poet who translated famous works in Bangla as well as writing his own songs and poetry. He has a prestigious library named after him. An aristocratic background Syed Alaol is one of the most famous Bengali poets of the Middle Ages. He was born around 1607 AD. There are disagreements over the place of his birth. Some scholars suggest that he was born in Chittagong while others say Faridpur. Alaol's father was a minister of MajlishKutub, the ruler of Fatwabad (Fatehabad). Since he was born into an aristocratic family, Alaol received a good education in his early years. He learnt Bangla, Sanskrit, Arabic and Persian languages as well as the art of war and music. Captured by pirates On one occasion when Alaol was quite young, he was going to Chittagong with his father by boat. On the way, they were attacked by Portuguese pirates. The pirates killed his father and captured him. He was sent to Arakan in Myanmar. Young Alaol found work as a bodyguard in Arakan. Later he worked as a teacher of music and dance in a well-to-do family. His poetic talent soon became well known and he was able to secure a place at the royal court of Arakan where he received royal patronage. Among his patrons were Syed Musa (Royal Minister), Solaiman (Chief Minister), Mohammad Khan (Minister of Army), MajlisNabaraj (Minister of Taxation) and Magan Thakur, the Prime Minister and the adopted son of the king's sister. Translations and original work Alaol was a prolific writer. His most significant contributions to Bangla literature were made through translations of famous works in different languages into Bangla. His masterpiece, Padmavati, is a translation of a Hindi poem Padmavat by Malik Mohammad Jayasi. Most of his other translations were made from Persian and include SaifulmulukBadiuzzamal, Satimayana-Lor-Chandrani, Saptapaykar, Sikandarnama and Tohfa. ButAlaol also produced his own original works. These include a number of songs, mostly vaishav, and a book on the art of music, Ragtalnama. Alaolis mostly hailed as one of the great poets who introduced romantic themes in Bangla poetry. Another characteristic of his works was that though they were mostly translated from other languages, his creative touch and unique style made the works essentially the property of the Bangla language. In addition to contributing to Bangla literature, Alaol also paid attention to questions of religion and morality, which were reflected in his Tohfa.An award in his name Alaol died around 1673 in Hat Hazari of Chittagong. A prestigious literary award in his name, AlaolSahityaPurashkar, has been introduced to recognize important works in contemporary Bangla. Read the following excerpts:Excerpt from My Antonia, by Willa Cather Sometimes I went south to visit our German neighbors and to admire their catalpa grove, or to see the big elm tree that grew up out of a deep crack in the earth and had a hawk's nest in its branches.Excerpt from Adventures of Huckleberry Finn, by Mark Twain North of the house, inside the ploughed fire-breaks, grew a thick-set strip of box-elder trees, low and bushy, their leaves already turning yellowWhat might be the shared theme of these excerpts?the beauty of naturethe importance of neighborsthe values of farm lifethe simplicity of animals A ladder leans against the side of the a house. The ladder is 19 feet long and forms an angle of elevation of 75 degree when leaned against the house. How far away from the house is the ladder? Round your answer to the nearest tenth. Silvio Berlusconi, prime minister of Italy, owns nearly half of the countrys television stations, its most popular news magazine, its largest advertising agency, and a publishing house. His brother owns a major newspaper. What is the MOST LIKELY consequence of this situation on the Italian media?a. limitations on freedom of the press b.a greater variety of programmingc. an increased diversity of viewpointsD. more reporters investigating government corruption How did MyPlate help you create your menu? In three sentences, explain how you used MyPlate as a guide to create your menu. Instructions: Your own recipe. using imperative formal commands, tell your mom how to make your favorite recipe. Use the lesson 4 to help with this assignment. Find the perimeter of this semi-circle with diameter, d = 22cm.Give your answer as an expression in terms of t. What is the solution to the equation x^2 + 10x + 75 = 0?